11311451443 has 4 divisors (see below), whose sum is σ = 11394016920. Its totient is φ = 11228885968.

The previous prime is 11311451357. The next prime is 11311451447. The reversal of 11311451443 is 34415411311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11311451443 - 2¹³ = 11311443251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11311451447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41282533 + ... + 41282806.

It is an arithmetic number, because the mean of its divisors is an integer number (2848504230).

Almost surely, 2^11311451443 is an apocalyptic number.

11311451443 is a deficient number, since it is larger than the sum of its proper divisors (82565477).

11311451443 is an equidigital number, since it uses as much as digits as its factorization.

11311451443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82565476.

The product of its digits is 2880, while the sum is 28.

Adding to 11311451443 its reverse (34415411311), we get a palindrome (45726862754).

The spelling of 11311451443 in words is "eleven billion, three hundred eleven million, four hundred fifty-one thousand, four hundred forty-three".